Switch-lock.



S. C. O. BERG. SWITCH LOCK. APPLICATION FILED 601.30. 1915.

Patented Feb. 19, 1918:

IMF/570R. 6. Jay,

S/zymzi 6.

Br j

ATTORMZ sIGvART o. odnnns, or KAnsAs CITY, MIsso nI.

SWITCH-LOCK.

Specification ofLttersPateht. Pate ted Feb. 19, 1918 Application filed october 30, 1916. 'Serial No. 128,460.

To all whom it may concern: I 1

Be it known that I, SIevART'G. O. Bnnga citizen of the United" States, residing at Kansas City, in the county of Jackson and State of Missouri, have-invented certain new and useful Improvements in Switch-Locks, of which the following is a specification.

My invention relates to switchlocks and while susceptible to general use is adapted more particularly for locking in off or open position the switches employed on Ford cars for controlling the ignition system.

'ure 1 is a front elevation of the lock ted upon the customary switch. :2 is a rear elevation of the lock removed from the switch.

Fig. 3 is a vertical section of the lock on line llllll of Fig. 1.

Fig. detail perspective of a ward constituting a portion of the lock.

Fig. 5 is a detail perspective of a wing constituting a portion of the ward.

A. designates the usual switch employed for opening and closing the ignition system on the Ford ca-r.

1 designates the lock case provided at its rear side with a plurality of eyes 2 for the reception of screws B, whereby said case is removably secured to the face of the switch- A. Access with a screw driver is had to the screw heads when the same are bearing against the eyes 2, through holes 3 arranged in alinement with the screw holes in said eyes 2.

5 designates a barrel rotatably mounted in the case 1 near the central portion thereof and provided at its inner end with two diametrically opposed lugs 6, adapted to enter the grooved portions C of the rotary contact of the switch A.

T ie barrel 5 is reliably held in the case 1 by front marginal flange 7 and a ward 8, which latter is removably secured upon the rear portion of the barrel by suitable means, such screws The barrel 5 has a centrall-y-disposed key-hole 10 to receive the bit of a key 11, whereby said barrel can be rotated to locked and unlocked positions.

VVhen'the barrel is rotated to locked position it is secured in such position by a plurality of tumblers 12, slidably-mounted in bores 13 in'the caseand bores 14 in the barrel 5. The remote ends ,of the bores 13 are closed by plugs 15, springs 16 being first inserted in said bores to yieldinglyforce the tumblers 12 toward the center of the key-, hole 10. Movement of the tumblers 12 to ward the center of the key-hole is limited by their pointed terminals contacting the reduced endsof the bores 14.

Each tumbler 12 consists of twopieces, one of which is contacted by the key 11, as disclosed by Fig. 3, to unlock the tumbler, the other being adapted to be forced'by its respective spring 16 across the joint between the barrel 5 and the case 1, to lock said barrel from rotation until unlocked by the in sertion of the key 11, as aforementioned.

Returning to the Ward 8, the purpose of which is to assist in holding the barrel 5 in position in the case 1 and cm er the heads of the screws B when the barrel is locked, it i will be noted by referring to Figs. 2, 4 and 5, that said ward a plurality of fixed wings 18 projecting therefrom and a movable wing 19. Said movable wing19 is pivoted at its upper. end upon a stud 20 projecting rearwardly from the case 1, and said wing has a. longitudinal slot 21 to receive a finger 22 projecting forwardly from the lower portion of the ward 8.

With the parts constructed and'arranged as shown in the present instance, the barrel 5 is held from rotation by the tumblers 12, and in turn holds the switch A inofi position. At the same time the holes 3 are covered by the wings 18 and 19, so that. access cannot be had to the screws B for the purpose of removing the look from the switch. Upon the insertion of a proper key, as disclosed by Fig. 3, the tumblers 12 are forced inwardly until their joints register withthe joint between the case 1 and the barrel 5, whereupon. the latter can be rotated in one direction by the key 11 to throw the switch first into contact with th battery side and after the motor has been started to the magneto side. The rotation of the barrel 5 rotates the ward 8 and uncovers the holes 3,

switch for repairs if necessary.

From the foregoing description, it is apmy invention," reserve the right to make such changes in the construction;combmation and arrangement of parts as properly fall-"within the spirit and scope of the I claimsfi 7 1 7 1 f Having thus "described my invention, what Ic-laim and desire to secure by Letters Pateiit; is I I a ."1. In combination with a casing and a l mechanism therein, a lock consisting of a ase having screw receiving means 1n its; rear portion so that'lt canbesecured by abarrel ournaled 1nv screws to said casing sa d case and adapted to control the mechae nism, a ward secured to said barrel to r0- 7 ta-te "therewith-"and provided with integral rwings to cover a number of the screw heads 7 when'the barrelis' 1n locked position, a pivoted wing to co verone of the screw heads,

means on the ward for actuating said pivoted wing, and tumblers for locking said barrel. i In combination with a casing and a mechanism therein, a lock consisting of a case having screw-receiving means inits rear portion so that it can be sccu1'edby screws t'o'said-casing, a barrel journaled in said case and adapted to control the mecha; nism, award secured tovsaid barrel to rotate therewith and provided with integral Wings to cover, a numberof the screw heads when the. barrel is indocked position, a slotted pivoted wing to' cover one of the screw;

heads, a finger projecting from the'ward through theslotted portion of the pivoted wing to actuate the locking the barrel.

In testimony whereofI afiiX my signature,

in the presence of two witnesses.

g SIGVART. C. O. BERG.

.lVitnesses: i 1

F. G.'Frscmm,

-L.' J. FISCHER,

Copies. this pa te iit may be'ob ta ine d for fiv cents each. by addressing the Commissioner of Patents, 1 J Washington, D. C.

same, and means for 

